Touchpad & Clicks don't work or either delay in hp laptop with Synamptic touchpad

[ayushkadbe]

I am using parrot os on my hp notebook 15bx180tx. I have dual boot with Parrot Os with KDE Plasma on SSD and windows 10 on harddisk. It was working fine since last 1 year.
But after I upgraded my ram from 8GB to 16GB. Synaptic touchpad started getting laggy, cursor moves but doesn’t click, even left and right key on touchpad don’t click.
Tried installing xserver libinput, evdev, mouse and synaptics drivers for touchpad, Reinstalling Latest Version, managing speed and pressure on touch pad settings, but It doesn’t help much.

SYSTEM INFO:
Parrot OS 5.2
KDE Plasma version: 5.20.5
KDE Framework version: 5.78.0
Qt Version: 5.15.2
Kernel Version: 6.0.0-12parrot1-amd64
OS Type: 64-bit

Hardware
Processors: 8 x Intel@Core i5-8250U CPU @ 1.60GHz
Memory: 15.6 GiB of Ram
Graphics: Mesa Intel@ UHD Graphics 620

cat /proc/bus/input/devices
I: Bus=0011 Vendor=0002 Product=0007 Version=01b1
N: Name=“SynPS/2 Synaptics TouchPad”
P: Phys=isa0060/serio1/input0
S: Sysfs=/devices/platform/i8042/serio1/input/input4
U: Uniq=
H: Handlers=mouse0 event4
B: PROP=1
B: EV=b
B: KEY=e520 30000 0 0 0 0
B: ABS=660800011000003

└──╼ $xinput list
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ SynPS/2 Synaptics TouchPad id=10 [slave pointer (2)]
⎣ Virtual core keyboard id=3 [master keyboard (2)]
↳ Virtual core XTEST keyboard id=5 [slave keyboard (3)]
↳ Power Button id=6 [slave keyboard (3)]
↳ Video Bus id=7 [slave keyboard (3)]
↳ HP TrueVision HD Camera: HP Tru id=8 [slave keyboard (3)]
↳ AT Translated Set 2 keyboard id=9 [slave keyboard (3)]
↳ HP WMI hotkeys id=11 [slave keyboard (3)]

Without touchpad & clicks, it’s impossible to operate this laptop.
Someone help me fix this issue.

[Fred_Sheehan (Fred)]

Actually you don’t need a mouse at all to use the system, its Linux you only need a keyboard, but I digress…
As it can ‘see’ your mousepad and identifies it correctly, you just need the synaptics packages;

sudo apt install xserver-xorg-input-libinput xserver-xorg-input-evdev xserver-xorg-input-mouse xserver-xorg-input-synaptics

A reboot should then make it work…
But you say you’ve tried this… and…

But after I upgraded my ram from 8GB to 16GB. Synaptic touchpad started getting laggy, cursor moves but doesn’t click, even left and right key on touchpad don’t click.

would suggest you have disturbed a ribbon cable when you upgraded the RAM or its not quite together properly…